Please explain more what you want to do.
If you mean hiding some text until something is clicked to reveal it… try this: http://www.farinspace.com/wordpress-peekaboo-plugin/
I’m using it on a site right now with good results.
Thread Starter
L-tic
(@l-tic)
No, I want to hide/show a whole widget on the sidebar.
So if someone would click on it, the widget would be shown or hidden.
Maybe the Tabbed Widgets plugin will do what you want.